Roof top
There is a greater pressure drop due to the narrower channels. MWC1 assembly, available for models 415 to 960. This heat recovery unit is used to transfer the heat and humidity from the air-conditioned room's return air to the fresh air used for ventilation, before it is discharged outdoors. The return air circulates in half of the heat recovery unit and the ventilation air circulates in the other half, in the opposite direction. As the rotor rotates, very fine channels of air which form the matrix come into contact with the fresh air and the return air in turn, thereby transferring heat and humidity from one circuit to the other. The efficiency of the recovery depends on the following factors: - Wheel diameters: • 1,500 mm: all models • 1,800 mm: all models except 415 and 480. • 2,000 mm: all models except 415 and 480. - Materials: • Aluminium: sensible heat recovery. • Aluminium with epoxy coating: sensible heat recovery in aggressive environments. • Hybrid wheel: enthalpic recovery. • Aluminium with silica-gel coating: enthalpic recovery with increased efficiency on recovery of latent heat. - Channel cross sections: The wheel is formed of two aluminium panels, one smooth and one fluted. The fluted panel can be provided in one of four different configurations: • 1.5 mm cross section: the large surface area ensures a high level of efficiency. • 1.7 mm cross section: high efficiency. • 2.0 mm cross section: the most commonly-used cross section due to its high efficiency and moderate pressure drops. • 2.5 mm cross section: low pressure drop. Designed for high air speeds with low pressure drops. The rotary heat exchanger is fitted into a module attached to the side of the machine. This module can also be equipped with filters on the fresh air intake and on the exhaust air outlet: washable (default option), G4 or G4 with low pressure drop (optional). With the MWC1 assembly, the supply air fans and return air fans are EC plug fans. Consult the selection tables for these fans. This assembly can be supplied, in option, with a speed drive for the wheel which avoids the risk of icing on the wheel during the defrost operation. The speed drive is compulsory with output temperatures on both sides of the wheel lower than 1°C or an average temperature on the wheel lower than 3ºC. : the calculations for the selection of a rotary heat exchanger according to the parameters described above should be done using our selection software. Important: With this option, CIATrtc electronic control is mandatory, the change of control isn’t allowed.
Exhaust air damper
Fresh air damper
Access panel for the wheel Filter for exhaust air Inside the wheel Filter for fresh air Heat recovery unit condensate drain
HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 17.01 A
539
SPACE PF 415 - 1200